An angry Red-winged Blackbird is apparently targeting anyone walking, especially with a hat, or running by the west side of the Center Street walking bridge over the Des Moines River.

KCCI cameras captured the bird getting so close it was getting into people's hair.

Experts said the birds become aggressive when protecting their nest, which is somewhere near the bridge and river. The bird sits on a nearby light pole or the bridge and swoops down on passersby.

"I was just enjoying the river and I came up here and I was a little bit distracted by the water there and then all of the sudden this bird hit me on the top of the head," said Brian Creighton, a runner KCCI spotted near the bridge Wednesday. "I wasn't sure it was a bird at first. And then I looked up and it was hovering over me. So then I just took off."

It's a good bet that once the baby Blackbirds are grown, their father will take off. Until then, watch yourself here on the west side of the bridge, next to the river.